阅读说明：本技术 一种用于侦测多个电路板件粘连的方法 (Method for detecting adhesion of multiple circuit boards ) 是由 刘刚 颜朝信 于 2019-11-08 设计创作，主要内容包括：本发明涉及电路板件上料技术领域,尤其公开了一种用于侦测多个电路板件粘连的方法,包括如下步骤：输送系统用于移送外界的电路板件；称重系统包括称重单元、计算分析单元及报警单元；输送系统将电路板件移送至称重系统或将称重系统承载的电路板件移走；称重单元用于测量称重系统所承载的电路板件的重量,计算分析单元将称重单元所测量的实际重量值与单个电路板件的基准重量值比较分析,当称重单元所测量的实际重量值与单个电路板件的基准重量值不符合时,报警单元启动用于警示提醒,外界的操作人员或机器人即可移走称重系统所承载的电路板件；避免因两个电路板件粘连而导致上料错误,提升电路板件的上料良率,进而提升电路板件的加工良率。(The invention relates to the technical field of circuit board piece feeding, and particularly discloses a method for detecting adhesion of a plurality of circuit board pieces, which comprises the following steps: the conveying system is used for transferring external circuit board pieces; the weighing system comprises a weighing unit, a calculation and analysis unit and an alarm unit; the conveying system transfers the circuit board parts to the weighing system or removes the circuit board parts carried by the weighing system; the weighing unit is used for measuring the weight of the circuit board piece borne by the weighing system, the calculation and analysis unit compares and analyzes an actual weight value measured by the weighing unit with a reference weight value of a single circuit board piece, when the actual weight value measured by the weighing unit does not accord with the reference weight value of the single circuit board piece, the alarm unit starts to warn and remind, and an external operator or a robot can remove the circuit board piece borne by the weighing system; the feeding error caused by the adhesion of the two circuit boards is avoided, the feeding yield of the circuit boards is improved, and the processing yield of the circuit boards is further improved.)

1. A method for detecting adhesion of a plurality of circuit boards, comprising the steps of:

providing a conveying system, wherein the conveying system is used for transferring external circuit board pieces;

providing a weighing system, wherein the weighing system comprises a weighing unit, a calculation and analysis unit and an alarm unit;

the conveying system transfers the circuit board parts to the weighing system or removes the circuit board parts carried by the weighing system;

the weighing unit is used for measuring the weight of the circuit board piece borne by the weighing system, the calculation and analysis unit compares and analyzes the actual weight value measured by the weighing unit with the reference weight value of the single circuit board piece, and when the actual weight value measured by the weighing unit does not accord with the reference weight value of the single circuit board piece, the alarm unit starts to be used for warning and reminding.

2. The method of claim 1, wherein the step of detecting the adhesion of the plurality of circuit boards comprises: the weighing system further comprises a tolerance setting unit, and different tolerance ranges are configured for the reference weight values of the single circuit board pieces through the tolerance setting unit according to different circuit board pieces.

3. The method as claimed in claim 1, further comprising the steps of:

providing a lifting system, wherein the lifting system is used for being matched with a weighing system, and the weighing system further comprises a zero setting unit; the lifting system is lifted upwards so that the circuit board piece carried by the weighing system is lifted without contacting the weighing system, and the zeroing unit triggers the weighing unit to be zeroed.

4. The method of claim 3, wherein the step of detecting the adhesion of the plurality of circuit boards comprises: the weighing unit is provided with a supporting plate for bearing the circuit board piece; the lifting system comprises a driving piece, a bracket connected with the output end of the driving piece and a plurality of ejector rods arranged on the bracket, the ejector rods are arranged around the supporting plate, the free ends of the ejector rods are used for jacking circuit boards borne by the supporting plate, and the driving piece drives the ejector rods to lift the circuit boards borne by the supporting plate through the bracket.

5. The method of claim 4, wherein the step of detecting the adhesion of the plurality of circuit boards comprises: the ejector pin can be dismantled and be connected with the silica gel pad, and the silica gel pad is used for contradicting the support circuit board spare.

6. The method of claim 5, wherein the step of detecting the adhesion of the plurality of circuit boards comprises: the ejector rod is provided with a positioning blind hole and an annular clamping groove, the positioning blind hole is formed by being concavely arranged from the end surface of the free end of the ejector rod, and the annular clamping groove is formed by being concavely arranged from the inner side wall of the positioning blind hole; the silica gel pad includes gasket part and the location portion of being connected with gasket part, and location portion is equipped with the card and holds the portion, and location portion is used for stretching into the blind hole of location, and the card is held the portion and is used for stretching into ring groove in, and gasket part is used for contradicting the support circuit board spare.

7. The method of claim 4, wherein the step of detecting the adhesion of the plurality of circuit boards comprises: the supporting plate is circular, the number of the ejector rods is three, and the three ejector rods are in an annular array around the central axis of the supporting plate.

8. The method of claim 1, wherein the step of detecting the adhesion of the plurality of circuit boards comprises: the conveying system comprises an input conveying line, a first output line and a transfer manipulator, wherein the input conveying line is used for automatically inputting an external circuit board, the first output line is used for automatically outputting the circuit board weighed by the weighing system, and the transfer manipulator transfers the circuit board conveyed by the input conveying line to the weighing system and transfers the circuit board loaded by the weighing system to the first output line.

9. The method of claim 8, wherein the step of detecting the adhesion of the plurality of circuit boards comprises: the conveying system also comprises a material collecting box; when the actual weight value measured by the weighing unit is not consistent with the reference weight value of a single circuit board, the alarm unit is started for warning and reminding, and the transferring manipulator transfers the circuit board carried by the weighing system to the material collecting box; when the actual weight value measured by the weighing unit is consistent with the reference weight value of the single circuit board piece, the transferring mechanical arm transfers the circuit board piece carried by the weighing system to the first output line.

10. The method of claim 9, wherein the step of detecting the adhesion of the plurality of circuit boards comprises: the conveying system further comprises a second output line, when the actual weight value measured by the weighing unit is not in accordance with the reference weight value of a single circuit board, the alarm unit is started for warning, the transferring manipulator transfers the circuit board carried by the weighing system to the second output line, and the second output line automatically conveys the circuit board transferred by the transferring manipulator to the collecting box; the first output line is provided so as to intersect the longitudinal direction of the second output line.

Technical Field

The invention relates to the technical field of circuit board piece feeding, and particularly discloses a method for detecting adhesion of a plurality of circuit board pieces.

Background

Various electronic products all need to use circuit board spare (PCB for short), in the manufacturing process of PCB, need carry out the processing of multichannel process to PCB, in order to promote PCB's machining efficiency, realized the processing to PCB automatic feeding, in the in-process of PCB automatic feeding, PCB can lead to the material loading mistake because of two or more adhesions together, PCB of material loading mistake can lead to PCB processing badly, consequently, two kinds of methods that detect whether PCB of material loading adheres have appeared among the prior art, two kinds of methods are respectively for two spys of contact and two spys of non-contact.

The two contact-type detectors need to perform pressing detection on the surface of the PCB, and the thinner PCB is more likely to be damaged by pressing and indentation, which often causes the PCB to be scrapped due to pressing.

The two non-contact pieces are used for detecting the hole positions on the PCB, and when the hole positions of the PCB with the holes are detected, wrong signal numerical values can be generated because sound wave signals directly penetrate through the hole positions communicated by the overlapped PCBs, and the adhered PCBs cannot be accurately judged.

Disclosure of Invention

In order to overcome the defects and shortcomings in the prior art, the invention aims to provide a method for detecting adhesion of a plurality of circuit boards, so that a feeding error caused by adhesion of two circuit boards is avoided, the feeding yield of the circuit boards is improved, and the processing and manufacturing yield of the circuit boards is further improved.

To achieve the above object, a method for detecting adhesion of a plurality of circuit boards according to the present invention comprises the following steps:

providing a conveying system, wherein the conveying system is used for transferring external circuit board pieces;

providing a weighing system, wherein the weighing system comprises a weighing unit, a calculation and analysis unit and an alarm unit;

the conveying system transfers the circuit board parts to the weighing system or removes the circuit board parts carried by the weighing system;

the weighing unit is used for measuring the weight of the circuit board piece borne by the weighing system, the calculation and analysis unit compares and analyzes the actual weight value measured by the weighing unit with the reference weight value of the single circuit board piece, and when the actual weight value measured by the weighing unit does not accord with the reference weight value of the single circuit board piece, the alarm unit starts to be used for warning and reminding.

Preferably, the weighing system further comprises a tolerance setting unit, and different tolerance ranges are configured for the reference weight values of the single circuit board pieces through the tolerance setting unit according to different circuit board pieces.

Preferably, the method further comprises the following steps:

providing a lifting system, wherein the lifting system is used for being matched with a weighing system, and the weighing system further comprises a zero setting unit;

the lifting system is lifted upwards so that the circuit board piece carried by the weighing system is lifted without contacting the weighing system, and the zeroing unit triggers the weighing unit to be zeroed.

Preferably, the weighing unit is provided with a supporting plate for bearing the circuit board piece; the lifting system comprises a driving piece, a bracket connected with the output end of the driving piece and a plurality of ejector rods arranged on the bracket, the ejector rods are arranged around the supporting plate, the free ends of the ejector rods are used for jacking circuit boards borne by the supporting plate, and the driving piece drives the ejector rods to lift the circuit boards borne by the supporting plate through the bracket.

Preferably, the ejector pin can be dismantled and be connected with the silica gel pad, and the silica gel pad is used for contradicting the support circuit board spare.

Preferably, the ejector rod is provided with a positioning blind hole and an annular clamping groove, the positioning blind hole is formed by being concavely arranged from the end surface of the free end of the ejector rod, and the annular clamping groove is formed by being concavely arranged from the inner side wall of the positioning blind hole; the silica gel pad includes gasket part and the location portion of being connected with gasket part, and location portion is equipped with the card and holds the portion, and location portion is used for stretching into the blind hole of location, and the card is held the portion and is used for stretching into ring groove in, and gasket part is used for contradicting the support circuit board spare.

Preferably, the supporting plate is circular, the number of the ejector rods is three, and the three ejector rods are arranged in an annular array around the central axis of the supporting plate.

Preferably, the conveying system includes an input conveying line, a first output line and a transfer manipulator, the input conveying line is used for automatically inputting external circuit boards, the first output line is used for automatically outputting circuit boards weighed by the weighing system, and the transfer manipulator transfers the circuit boards conveyed by the input conveying line to the weighing system and transfers the circuit boards carried by the weighing system to the first output line.

Preferably, the conveying system further comprises a material collecting box; when the actual weight value measured by the weighing unit is not consistent with the reference weight value of a single circuit board, the alarm unit is started for warning and reminding, and the transferring manipulator transfers the circuit board carried by the weighing system to the material collecting box; when the actual weight value measured by the weighing unit is consistent with the reference weight value of the single circuit board piece, the transferring mechanical arm transfers the circuit board piece carried by the weighing system to the first output line.

Preferably, the conveying system further comprises a second output line, when the actual weight value measured by the weighing unit does not accord with the reference weight value of a single circuit board, the alarm unit is started for warning, the transferring manipulator transfers the circuit board carried by the weighing system to the second output line, and the second output line automatically conveys the circuit board transferred by the transferring manipulator to the collecting box; the first output line is provided so as to intersect the longitudinal direction of the second output line.

The invention has the beneficial effects that: when the actual weight value measured by the weighing unit is not in accordance with the reference weight value of a single circuit board, the alarm unit is started for warning and reminding, and an external operator or a robot can remove the circuit board carried by the weighing system; the feeding error caused by the adhesion of the two circuit boards is avoided, the feeding yield of the circuit boards is improved, and the processing yield of the circuit boards is further improved.

Drawings

FIG. 1 is a schematic flow diagram of the present invention;

FIG. 2 is a schematic diagram of the lift system of the present invention;

FIG. 3 is a cross-sectional view of the ejector pin and the silicone pad of the present invention;

fig. 4 is a schematic structural diagram of the input conveyor line, the first output line, or the second conveyor line of the present invention.

The reference numerals include:

1-lifting system 2-driving member 3-bracket

4-ejector rod 5-silica gel pad 6-positioning blind hole

7-annular clamping groove 8-gasket part 9-positioning part

11-holding part 12-frame 13-soft ring belt

14-roller 15-external gear ring.

Detailed Description

For the understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.

Referring to fig. 1 to 4, a method for detecting adhesion of a plurality of circuit boards according to the present invention includes the following steps:

providing a conveying system, wherein the conveying system is used for automatically conveying external circuit boards without manually moving the circuit boards by an operator;

providing a weighing system, wherein the weighing system comprises a weighing unit, a calculation and analysis unit and an alarm unit;

the conveying system is used for transferring the circuit board part to the weighing system or transferring the circuit board part carried by the weighing system to a required preset position;

the weighing unit is used for measuring the weight of the circuit board piece that the weighing system bore, calculation analysis unit carries out comparative analysis with the actual weight value that the weighing unit measured and the basis weight value of single circuit board piece, when the actual weight value that the weighing unit measured does not accord with the basis weight value of single circuit board piece, the alarm unit starts to be used for warning and reminds external operating personnel, according to actual need, the alarm unit can send out alarm sound or/and scintillation warning light in order to remind operating personnel.

When the operator hears the warning prompt of the alarm unit, the operator or the robot can remove the circuit board part carried by the weighing system; the feeding error caused by the adhesion of the two circuit boards is avoided, the feeding yield of the circuit boards is improved, and the processing yield of the circuit boards is further improved.

The weighing system also comprises a tolerance setting unit, and different tolerance ranges are configured for the reference weight value of a single circuit board piece through the tolerance setting unit according to the specification requirements of different circuit board pieces, so that the weighing system can be compatible with the detection requirements of circuit board pieces with various specifications.

According to actual needs, an operator can set an upper tolerance value and a lower tolerance value of the reference weight value of a single circuit board component respectively by using the tolerance setting unit. Of course, it is also possible to input 1.5 times the reference weight value of the individual circuit board elements as the upper tolerance value by means of the tolerance setting unit. It is also possible to input 0.5 times the reference weight value of the individual circuit board element as the lower tolerance value by means of the tolerance setting unit.

The method for detecting the adhesion of the circuit boards further comprises the following steps:

providing a lifting system 1, wherein the lifting system 1 is used for being matched with a weighing system for use, and the weighing system further comprises a zero setting unit;

the lifting system 1 is raised upwards so that the circuit board elements carried on the weighing system are lifted without touching the weighing system, and the zeroing unit triggers the zeroing of the weighing unit.

When the circuit board parts conveyed by the conveying system need to be detected, the weighing unit of the weighing system needs to be corrected firstly, at the moment, the lifting system 1 is triggered to lift upwards firstly, and then the zero setting unit is utilized to trigger the weighing unit to return to zero, so that the measuring accuracy of the weighing unit is ensured. During the process of lifting the lifting system 1 upwards, if the weighing system does not carry circuit board elements, the lifting system 1 is directly lifted; if the weighing system bears the circuit board part, the circuit board part borne by the weighing system can be jacked upwards to separate the circuit board part from the weighing system when the lifting system 1 is lifted, and therefore the phenomenon that the weighing unit returns to zero is avoided.

The weighing unit is provided with a supporting plate for bearing the circuit board piece, and the supporting plate is preferably arranged parallel to the horizontal plane; the lifting system 1 comprises a driving part 2, a bracket 3 connected with an output end of the driving part 2, and a plurality of ejector rods 4 arranged at the upper end of the bracket 3, wherein the driving part 2 can be an electric cylinder or an air cylinder according to actual needs, the plurality of ejector rods 4 are arranged around the supporting plate, free ends of the plurality of ejector rods 4 are used for jacking circuit board pieces borne by the supporting plate, and the driving part 2 drives the ejector rods 4 to rise through the bracket 3 so as to rise the circuit board pieces borne by the supporting plate.

When the weighing unit needs to be zeroed, the driving piece 2 drives the bracket 3 to enable the ejector rods 4 to ascend upwards, the top ends of the ejector rods 4 ascending upwards respectively abut against the bottom surface of the circuit board piece borne by the supporting plate, the circuit board piece is separated from the supporting plate along with continuous ascending of the ejector rods 4, and then the zeroing unit can be triggered to enable the weighing unit to be zeroed.

Preferably, the top end of the ejector rod 4 is detachably connected with a silica gel pad 5, and the silica gel pad 5 is used for supporting the circuit board in an abutting mode. When the ejector rod 4 props against and supports the circuit board, the impact force between the ejector rod 4 and the circuit board is absorbed by using the soft characteristic of the silica gel pad 5, and the circuit board is prevented from being damaged by the collision of the ejector rod 4.

Be provided with location blind hole 6 and ring groove 7 on ejector pin 4, location blind hole 6 is established from the terminal surface of the free end of ejector pin 4 is concave and is formed, and ring groove 7 is established from the inside wall of location blind hole 6 is concave and is formed, and ring groove 7 is the annular setting around the central axis of ejector pin 4.

The silica gel pad 5 comprises a gasket part 8 and a positioning part 9 connected with the gasket part 8, the gasket part 8 is a substantially circular flat plate, the positioning part 9 is located below the gasket part 8, a clamping part 11 is arranged on the positioning part 9, the clamping part 11 is formed by protruding from the outer surface of the positioning part 9, preferably, the clamping part 11 is annular around the central axis of the positioning part 9, the positioning part 9 is used for extending into the positioning blind hole 6, the clamping part 11 is used for extending into the annular clamping groove 7, the clamping part 11 is blocked by utilizing the inner groove wall of the annular clamping groove 7 to abut against, so that the positioning part 9 is prevented from being separated from the positioning blind hole 6 to cause the ejector rod 4 and the silica gel pad 5 to be separated from each other, and the gasket. Through the special structural arrangement of the ejector rod 4 and the silica gel pad 5, the ejector rod 4 and the silica gel pad 5 can be quickly detached or installed.

The supporting plate is approximately circular, namely the supporting plate is approximately a circular flat plate, the number of the ejector rods 4 is three, and the three ejector rods 4 are in an annular array around the central axis of the supporting plate. A plane is determined by the three top ends of the three ejector rods 4, so that the three ejector rods 4 can stably jack up the circuit board on the supporting plate, and the circuit board is prevented from falling down due to side turning relative to the ejector rods 4.

The conveying system comprises an input conveying line, a first output line and a transfer manipulator, wherein the input conveying line is used for automatically inputting an external circuit board, the first output line is used for automatically outputting the circuit board weighed by the weighing system, and the transfer manipulator transfers the circuit board conveyed by the input conveying line to the weighing system and transfers the circuit board loaded by the weighing system to the first output line.

When the input conveying line automatically conveys the circuit board to the vicinity of the weighing system, the transfer manipulator transfers the circuit board transferred by the input conveying line to the weighing unit of the weighing system for weighing processing, and when the weighing unit finishes the weighing processing of the circuit board, the transfer manipulator transfers the circuit board qualified for weighing to the first output line, and the first output line automatically outputs the circuit board transferred by the transfer manipulator to a required preset position. Of course, when the circuit board pieces weighed by the weighing unit are not qualified, the operator or the robot transfers the unqualified circuit board pieces to the defective product area.

The conveying system also comprises a material collecting box; when the actual weight value measured by the weighing unit is not in accordance with the reference weight value of a single circuit board, the alarm unit starts to warn and remind an operator, the transfer manipulator transfers the circuit board loaded by the weighing system to the material collecting box, and the alarm unit automatically cancels the warning and reminding after the transfer manipulator removes the unqualified circuit board weighed by the weighing unit; when the actual weight value measured by the weighing unit is consistent with the reference weight value of the single circuit board piece, the transferring mechanical arm transfers the circuit board piece carried by the weighing system to the first output line.

The conveying system further comprises a second output line, when the actual weight value measured by the weighing unit is not in accordance with the reference weight value of a single circuit board, the alarm unit starts to warn and remind, the circuit board carried by the weighing system is transferred to the second output line by the transfer manipulator, and the circuit board transferred by the transfer manipulator is automatically conveyed to the material collecting box by the second output line; the length direction of the first output line and the length direction of the second output line are arranged in a crossed mode, and the circuit board piece moves along the length direction of the output lines. Preferably, the length direction of the first output line and the length direction of the second output line are arranged vertically, so that the first output line and the second output line are prevented from interfering with each other in the use process. Through the setting of second transfer chain, with the unqualified circuit plate of weighing unit weight transfer to the defective products district and carry out unified processing, avoid weighing the unqualified circuit plate of unit weight to pile up at weighing system and use the interference simultaneously.

The input conveying line, the first output line and the second output line are basically the same in structure, the input conveying line, the first output line and the second output line respectively comprise a rack 12, a soft endless belt 13 and a plurality of rollers 14 which are rotatably installed on the rack 12, a driving motor which is installed on the rack 12 and used for driving the soft endless belt 13 to rotate, the rotating axes of the rollers 14 are arranged in parallel, the rollers 14 are arranged in a row along the length direction of the rack 12, and each roller 14 is detachably installed on the rack 12 one by one. The middle part of each roller 14 is provided with an outer gear ring 15, the outer gear ring 15 is arranged around the rotating axis of the roller 14, the soft ring belt 13 is a toothed belt, the teeth of the soft ring belt 13 are positioned on the outer side of the soft ring belt 13, and the soft ring belt 13 is meshed with the outer gear ring 15.

In practical use, the circuit board is placed on the rollers 14, and then when the driving motor drives the flexible endless belt 13 to rotate, the flexible endless belt 13 can drive the rollers 14 to rotate, and the rotating rollers 14 can drive the circuit board to move, so that the automatic conveying of the circuit board is realized. When one roller 14 is damaged, the damaged roller 14 can be directly detached for maintenance, and other rollers 14 continue to rotate without stopping the whole conveying line or output line, so that the transfer efficiency of circuit board parts is improved.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.